1/* $NetBSD: __setjmp14.S,v 1.2 2013/09/12 15:36:16 joerg Exp $ */ 2 3/* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Frank van der Linden for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 39#include <machine/asm.h> 40#include <machine/setjmp.h> 41 42#if defined(LIBC_SCCS) 43 RCSID("$NetBSD: __setjmp14.S,v 1.2 2013/09/12 15:36:16 joerg Exp $") 44#endif 45 46/* 47 * C library -- _setjmp, _longjmp 48 * 49 * longjmp(a,v) 50 * will generate a "return(v)" from the last call to 51 * setjmp(a) 52 * by restoring registers from the stack. 53 * The previous signal state is restored. 54 */ 55 56ENTRY(__setjmp14) 57 movq (%rsp),%r11 58 movq %rbx,(_JB_RBX * 8)(%rdi) 59 movq %rbp,(_JB_RBP * 8)(%rdi) 60 movq %r12,(_JB_R12 * 8)(%rdi) 61 movq %r13,(_JB_R13 * 8)(%rdi) 62 movq %r14,(_JB_R14 * 8)(%rdi) 63 movq %r15,(_JB_R15 * 8)(%rdi) 64 movq %rsp,(_JB_RSP * 8)(%rdi) 65 movq %r11,(_JB_PC * 8)(%rdi) 66 67 leaq (_JB_SIGMASK * 8)(%rdi),%rdx 68 xorl %edi,%edi 69 xorq %rsi,%rsi 70 71#ifdef __PIC__ 72 call PIC_PLT(_C_LABEL(__sigprocmask14)) 73#else 74 call _C_LABEL(__sigprocmask14) 75#endif 762: xorl %eax,%eax 77 ret 78 79ENTRY(__longjmp14) 80 movq %rdi,%r12 81 movl %esi,%r8d 82 83 leaq (_JB_SIGMASK * 8)(%rdi),%rsi 84 movl $3,%edi /* SIG_SETMASK */ 85 xorq %rdx,%rdx 86 87 pushq %r8 88#ifdef __PIC__ 89 call PIC_PLT(_C_LABEL(__sigprocmask14)) 90#else 91 call _C_LABEL(__sigprocmask14) 92#endif 93 popq %r8 94 movq (_JB_RBX * 8)(%r12),%rbx 95 movq (_JB_RBP * 8)(%r12),%rbp 96 movq (_JB_R13 * 8)(%r12),%r13 97 movq (_JB_R14 * 8)(%r12),%r14 98 movq (_JB_R15 * 8)(%r12),%r15 99 movq (_JB_RSP * 8)(%r12),%rsp 100 movq (_JB_PC * 8)(%r12),%r11 101 movq (_JB_R12 * 8)(%r12),%r12 102 103 movl %r8d,%eax 104 testl %eax,%eax 105 jnz 1f 106 incl %eax 1071: movq %r11,0(%rsp) 108 ret 109